@font-face { font-family: "M PLUS Rounded 1c"; font-weight: 500; font-display: swap; src: url("../fonts/mplus-rounded-1c-500.woff2") format("woff2"); }
@font-face { font-family: "M PLUS Rounded 1c"; font-weight: 700; font-display: swap; src: url("../fonts/mplus-rounded-1c-700.woff2") format("woff2"); }
@font-face { font-family: "M PLUS Rounded 1c"; font-weight: 800; font-display: swap; src: url("../fonts/mplus-rounded-1c-800.woff2") format("woff2"); }

/* 太極 Taiji: charcoal and cream, with red for the one thing that matters. */
:root {
  --bg: #f6f1e7;
  --surface: #fffdf8;
  --surface-2: #f1eadd;
  --text: #26262e;
  --muted: #6a6670;
  --border: #e9e1d2;
  /* the dark block behind the top of every view, and what sits on it */
  --top: #26262e;
  --top-2: #383842;
  --on-top: #f6f1e7;
  --on-top-muted: #b7b4bd;
  --top-good: #a9c48a;
  --top-busy: #9db4d6;
  /* selected states and primary buttons */
  --primary: #26262e;
  --on-primary: #f6f1e7;
  --on-primary-muted: #c9c5cc;
  --on-primary-star: #e0a740;
  --accent: #e2574a;        /* fills and strokes */
  --accent-text: #b5382d;   /* the same red, dark enough for text */
  --star: #b5791f;
  --again: #c2392d;
  --hard: #a86a16;
  --good: #5e7a4e;
  --easy: #4c6485;
  /* card states: st-* are fills, tx-* are text */
  --st-new: #e0a740;
  --st-learning: #e2574a;
  --st-young: #a9c48a;
  --st-mature: #5e7a4e;
  --tx-new: #a86a16;
  --tx-learning: #b5382d;
  --pad-bg: #f1eadd;
  --pad-ink: #26262e;
  --pad-guide: #d9cfbf;
  --pad-num: #b5382d;
  --shadow: 0 12px 32px rgba(38, 38, 46, .08);
  --shadow-card: 0 14px 36px rgba(38, 38, 46, .14);
  --radius: 28px;
  --font: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", ui-rounded, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  --font-jp: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  /* the large Japanese on study cards: the plain system face, whose kanji shapes are easier to learn from */
  --font-card: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1f26;
    --surface: #2a2a33;
    --surface-2: #363641;
    --text: #f6f1e7;
    --muted: #a9a6b0;
    --border: #3f3f4b;
    --top: #121216;
    --top-2: #2a2a33;
    --primary: #f6f1e7;
    --on-primary: #1f1f26;
    --on-primary-muted: #5b5761;
    --on-primary-star: #a86a16;
    --accent-text: #f0796d;
    --star: #e0a740;
    --again: #f0796d;
    --hard: #e0a740;
    --good: #a9c48a;
    --easy: #9db4d6;
    --st-young: #6e8f5c;
    --st-mature: #a9c48a;
    --tx-new: #e0a740;
    --tx-learning: #f0796d;
    /* the pad stays a sheet of cream paper */
    --pad-bg: #f6f1e7;
    --shadow: 0 12px 32px rgba(0, 0, 0, .28);
    --shadow-card: 0 14px 36px rgba(0, 0, 0, .36);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { background: var(--bg); overflow-x: clip; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; }
b, strong, h2 { font-weight: 800; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.settings-form h2:focus { outline: none; }
[hidden] { display: none !important; }

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid currentColor;
  opacity: .55;
}

.star { color: var(--star); }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 760px; margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 16px 14px;
  background: var(--top); color: var(--on-top);
  border-radius: 0 0 28px 28px;
}
/* The dark block: it runs from above the top bar down behind the first element of each view. */
.counts-panel, .study-bar, #view-words { position: relative; z-index: 0; }
.counts-panel::before, .study-bar::before, #view-words::before {
  content: ""; position: absolute; z-index: -1;
  top: -400px; left: 50%; width: 100vw; translate: -50% 0;
  background: var(--top); border-radius: 0 0 44px 44px;
}
.counts-panel::before { bottom: -36px; }
.study-bar::before { bottom: -260px; }
#view-words::before { height: 446px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  background: none; border: 0; cursor: pointer; padding: 0;
}
.brand-mark { display: block; width: 40px; height: 40px; }
.brand-mark .m-light { fill: var(--on-top); }
.brand-mark .m-dark { fill: var(--top); }
.brand-mark .m-ring { fill: var(--top); stroke: var(--on-top); stroke-width: .8; }
.brand-mark .m-dot { fill: var(--accent); }
.brand-text { font-weight: 800; font-size: 18px; letter-spacing: .2px; color: var(--on-top); }
.tabs { display: flex; align-items: center; gap: 4px; }
.tab, .icon-btn {
  background: none; border: 0; cursor: pointer;
  min-height: 44px; padding: 0 14px; border-radius: 999px; color: var(--on-top-muted); font-size: 16px;
}
.icon-btn { display: grid; place-items: center; width: 44px; padding: 0; color: var(--on-top); }
.tab:hover, .icon-btn:hover { background: var(--top-2); color: var(--on-top); }
.tab.active { background: var(--on-top); color: var(--top); font-weight: 700; }

main { max-width: 760px; margin: 0 auto; padding: 4px 16px calc(48px + env(safe-area-inset-bottom)); }
.view { display: flex; flex-direction: column; gap: 16px; }

/* ---------- panels ---------- */
.panel {
  position: relative; z-index: 1;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.panel-title, .field-label {
  font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .12em;
  color: var(--muted); margin-bottom: 10px;
}
.field { margin-bottom: 18px; }
.field-row { display: flex; flex-wrap: wrap; gap: 8px 32px; }
.hint { color: var(--muted); font-size: 13.5px; margin: 10px 0 0; }
.hint:empty { display: none; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.actions.center { justify-content: center; }
.actions.end { justify-content: flex-end; }

/* counts */
.panel.counts-panel {
  z-index: 0; display: grid; grid-template-columns: repeat(3, 1fr); padding: 2px 8px 4px;
  background: none; box-shadow: none;
}
.count { text-align: center; }
.count span { display: block; font-size: 36px; font-weight: 800; line-height: 1.15; font-variant-numeric: tabular-nums; }
.count label { font-size: 11px; color: var(--on-top-muted); text-transform: uppercase; letter-spacing: .12em; }
.count-new span { color: var(--st-new); }
.count-learn span { color: var(--accent); }
.count-review span { color: var(--top-good); }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-width: 74px; min-height: 60px; padding: 6px 16px; border-radius: 30px; cursor: pointer;
  border: 0; background: var(--surface-2); color: var(--muted);
  transition: background .15s, color .15s;
}
.chip b { font-size: 15px; }
.chip span { font-size: 12px; }
.chip.on { background: var(--primary); color: var(--on-primary); }
.chip.on > span { color: var(--on-primary-muted); }
.chip.on .star { color: var(--on-primary-star); }

/* segmented */
.segmented {
  display: inline-flex; padding: 4px; border-radius: 26px; background: var(--surface-2);
}
.segmented button {
  border: 0; background: none; cursor: pointer;
  min-height: 44px; padding: 0 16px; border-radius: 22px; font-size: 15px; color: var(--muted);
}
.segmented button.on { background: var(--primary); color: var(--on-primary); font-weight: 700; }

/* toggle */
.toggle { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; min-height: 52px; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-track {
  width: 40px; height: 24px; border-radius: 999px; background: color-mix(in srgb, var(--muted) 35%, var(--surface));
  position: relative; transition: background .2s; flex: none;
}
.toggle-thumb {
  position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform .2s;
}
.toggle input:checked + .toggle-track { background: var(--star); }
.toggle input:checked + .toggle-track .toggle-thumb { transform: translateX(16px); }
.toggle input:focus-visible + .toggle-track { outline: 2px solid var(--accent); outline-offset: 2px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  border: 0; border-radius: 999px; cursor: pointer;
  min-height: 44px; padding: 0 18px; font-weight: 700; transition: transform .08s, background .15s, opacity .15s;
  white-space: nowrap;
}
.btn:active:not(:disabled) { transform: scale(.98); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover:not(:disabled) { opacity: .9; }
.btn-ghost { background: var(--surface-2); }
.btn-ghost:hover:not(:disabled) { background: var(--border); }
.btn-danger { background: none; box-shadow: inset 0 0 0 1.5px var(--again); color: var(--again); }
.btn-lg { min-height: 54px; padding: 0 24px; font-size: 17px; font-weight: 800; }
.btn-sm { padding: 0 16px; font-size: 14px; }
.btn-wide { width: 100%; min-height: 58px; }
/* the red dot of the mark, on the one button that starts a session */
#btn-study { padding-left: 8px; gap: 12px; }
#btn-study::before { content: ""; flex: none; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); }

/* progress */
.progress-row { display: grid; grid-template-columns: 130px 1fr; gap: 4px 16px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.progress-row:last-child { border-bottom: 0; }
.progress-label { grid-row: span 2; display: flex; flex-direction: column; justify-content: center; }
.progress-label span { font-size: 12.5px; color: var(--muted); }
.progress-line { display: grid; grid-template-columns: 26px 1fr 40px; align-items: center; gap: 8px; }
.progress-tag { font-size: 11px; font-weight: 700; color: var(--muted); }
.progress-tag.star { color: var(--star); font-size: 14px; }
.progress-num { font-size: 12.5px; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
.progress-bar { display: flex; height: 8px; border-radius: 99px; overflow: hidden; background: var(--surface-2); }
.progress-bar i { display: block; height: 100%; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 12px; font-size: 12.5px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
i.st-new, .dot.st-new { background: var(--st-new); }
i.st-learning, .dot.st-learning { background: var(--st-learning); }
i.st-young, .dot.st-young { background: var(--st-young); }
i.st-mature, .dot.st-mature { background: var(--st-mature); }

/* ---------- study ---------- */
.study-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.study-bar .btn-ghost { background: var(--top-2); color: var(--on-top); }
.study-bar .btn-ghost:hover:not(:disabled) { background: var(--top-2); opacity: .85; }
.mini-counts { display: flex; gap: 14px; white-space: nowrap; font-weight: 800; font-variant-numeric: tabular-nums; align-items: center; }
.mini-counts .n-new { color: var(--st-new); }
.mini-counts .n-learn { color: var(--accent); }
.mini-counts .n-review { color: var(--top-good); }
.mini-counts span:not(.pill) { font-size: 17px; }
.pill {
  display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 9px; border-radius: 99px;
  background: var(--surface-2); color: var(--muted); white-space: nowrap;
}
.pill.practice { background: var(--top-2); color: var(--on-top); }

#card-area { position: relative; z-index: 1; }
.card-scene { perspective: 1400px; margin: 4px 0 18px; }
.card {
  display: grid; position: relative;
  min-height: min(56vh, 420px);
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.3, .7, .3, 1);
  cursor: pointer; outline: none;
}
.card.flipped { transform: rotateY(180deg); cursor: default; }
.card-scene.enter { animation: card-in .28s ease-out; }
@keyframes card-in { from { opacity: 0; translate: 0 10px; } to { opacity: 1; translate: 0 0; } }

.face {
  grid-area: 1 / 1;
  display: flex; flex-direction: column;
  background: var(--surface);
  border-radius: 32px;
  box-shadow: var(--shadow-card);
  padding: 20px 24px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  position: relative;
  overflow: hidden;
}
.face.back { transform: rotateY(180deg); }
.card-meta { display: flex; flex-wrap: wrap; gap: 2px 12px; padding-right: 36px; }
.tag { font-size: 12px; color: var(--muted); }
.tag.st { text-transform: capitalize; font-weight: 700; }
.tag.st-new { color: var(--tx-new); }
.tag.st-learning { color: var(--tx-learning); }
.tag.st-young, .tag.st-mature { color: var(--good); }
.card-star {
  position: absolute; top: 14px; right: 18px;
  font-size: 26px; color: var(--star); line-height: 1;
  text-shadow: 0 1px 6px color-mix(in srgb, var(--star) 40%, transparent);
}
.card-body {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: 6px; padding: 24px 0;
}
.jp-block { display: flex; flex-direction: column; align-items: center; }
.jp-block .kana { font-size: 18px; color: var(--muted); letter-spacing: .08em; }
.jp-block .jp { font-family: var(--font-card); font-size: clamp(38px, 9vw, 60px); line-height: 1.25; font-weight: 500; letter-spacing: .03em; word-break: keep-all; overflow-wrap: anywhere; }
.jp-block .romaji { font-size: 16px; color: var(--accent-text); font-style: italic; margin-top: 4px; letter-spacing: .02em; }
.note { font-size: 14px; color: var(--muted); background: var(--surface-2); padding: 3px 12px; border-radius: 8px; margin-top: 8px; }
.note::before { content: "例 "; color: var(--accent-text); font-weight: 700; }
.divider { width: 48px; height: 2px; background: var(--border); border-radius: 2px; margin: 14px 0 8px; }
.en { font-size: 20px; font-weight: 500; max-width: 32ch; }
.en.big { font-size: clamp(24px, 5vw, 32px); font-weight: 800; }
.card-foot { text-align: center; font-size: 13px; color: var(--muted); }
.speak {
  position: absolute; bottom: 14px; right: 14px;
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  border: 0; background: var(--surface-2); color: var(--muted); cursor: pointer;
}
.speak:hover { color: var(--accent-text); }

/* kanji cards */
.kanji-big { font-family: var(--font-card); font-size: clamp(84px, 24vw, 132px); line-height: 1.15; font-weight: 500; }
.readings { display: grid; gap: 4px; margin-top: 8px; font-family: var(--font-jp); font-size: 18px; text-align: left; }
.readings > div { display: flex; gap: 10px; align-items: baseline; }
.rd-label {
  flex: none; width: 40px; font-family: var(--font); font-size: 11px; letter-spacing: .12em; color: var(--muted);
}
.examples { list-style: none; margin: 14px 0 0; padding: 12px 0 0; border-top: 1px solid var(--border); display: grid; gap: 5px; text-align: left; font-size: 14px; }
.examples li { display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline; }
.ex-jp { font-family: var(--font-jp); font-size: 17px; font-weight: 500; }
.ex-kana { color: var(--muted); }
.ex-en { color: var(--muted); font-style: italic; }

/* drawing pad (js/draw.js) */
#pad { touch-action: none; }
.pad-wrap { display: flex; flex-direction: column; align-items: center; gap: 8px; margin-top: 14px; cursor: default; }
.pad {
  display: block; width: min(250px, 62vw); aspect-ratio: 1;
  background: var(--pad-bg); border-radius: 28px;
  touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; cursor: crosshair;
}
.pad path, .pad polyline { fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 4; }
.pad .pad-guide { stroke: var(--pad-guide); stroke-width: .6; stroke-dasharray: 1.5 3; }
.pad-done path { stroke: var(--pad-ink); }
.pad-user polyline { stroke: var(--accent); }
.pad-user polyline.bad { stroke: var(--pad-num); opacity: 0; transition: opacity .4s; }
.pad .pad-hint { stroke: var(--accent); animation: pad-hint 1.2s ease-out forwards; }
@keyframes pad-hint { 0%, 55% { opacity: .55; } 100% { opacity: 0; } }
.pad.diagram { width: min(150px, 40vw); cursor: default; touch-action: auto; margin-bottom: 8px; }
.pad.diagram.compare .pad-done path { opacity: .3; }
.pad-numbers text { font-size: 6.5px; font-weight: 700; fill: var(--pad-num); font-family: var(--font); }
.pad-tools { display: flex; gap: 8px; }
.pad-msg { min-height: 20px; font-size: 13px; font-weight: 600; color: var(--muted); }
#pad-msg { color: var(--hard); }
.seg-count {
  display: inline-block; margin-left: 4px; font-size: 12px; font-weight: 500;
}

.answer-bar { min-height: 70px; }
.rate-buttons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.rate {
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  padding: 10px 4px 9px; border-radius: 22px; cursor: pointer;
  border: 0; background: color-mix(in srgb, var(--c) 14%, var(--surface));
  font-weight: 700; color: var(--c); transition: transform .08s, background .15s;
}
.rate:hover { background: color-mix(in srgb, var(--c) 24%, var(--surface)); }
.rate:active { transform: scale(.97); }
.rate .rate-ivl { font-size: 12px; font-weight: 500; opacity: .85; }
.rate kbd { margin-top: 3px; font-size: 10px; }
.rate.again { --c: var(--again); }
.rate.hard { --c: var(--hard); }
.rate.good { --c: var(--good); }
.rate.easy { --c: var(--easy); }

.done { text-align: center; padding: 40px 20px; }
.done h2 { margin: 8px 0 6px; font-size: 24px; }
.done p { margin: 0 0 6px; }
.done .actions { margin-top: 20px; }
.done-icon {
  display: grid; place-items: center; margin: 0 auto;
  width: 56px; height: 56px; border-radius: 50%;
  background: color-mix(in srgb, var(--good) 15%, var(--surface)); color: var(--good);
  font-size: 28px; font-weight: 700;
}

/* ---------- words ---------- */
.words-toolbar { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; padding: 14px 16px; }
.words-toolbar input[type="search"], .words-toolbar select {
  font: inherit; color: inherit; background: var(--surface-2);
  border: 0; border-radius: 22px; min-height: 44px; padding: 0 16px;
}
.words-toolbar input[type="search"] { flex: 1 1 220px; }
.table-panel { padding: 6px 0 14px; overflow-x: auto; }
.table-panel .hint { padding: 0 16px; }
table.words { width: 100%; border-collapse: collapse; font-size: 14px; }
.words th {
  text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); padding: 10px 8px; border-bottom: 1px solid var(--border);
}
.words td { padding: 9px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.words tr.group td {
  background: var(--surface-2); font-weight: 700; font-size: 12.5px; color: var(--muted);
  padding: 6px 16px; border-bottom: 0;
}
.words tr.starred td:first-child { box-shadow: inset 3px 0 0 var(--star); }
.star-cell { width: 28px; text-align: center; padding-left: 12px !important; }
.jp-cell .jp { font-family: var(--font-jp); font-size: 18px; font-weight: 500; display: block; }
.jp-cell .kana { font-size: 12.5px; color: var(--muted); display: block; }
.jp-cell .note { display: inline-block; white-space: nowrap; font-size: 11.5px; padding: 1px 8px; margin-top: 3px; }
.ro-cell { color: var(--accent-text); font-style: italic; }
.jp-cell .kanji-cell { font-size: 30px; line-height: 1.2; }
.rd-cell { font-family: var(--font-jp); white-space: nowrap; }
.ex-line { display: block; font-family: var(--font-jp); font-size: 12.5px; color: var(--muted); }
.st-col { text-align: center; white-space: nowrap; padding-right: 12px !important; }
.pill.st-new { color: var(--tx-new); background: color-mix(in srgb, var(--st-new) 16%, transparent); }
.pill.st-learning { color: var(--tx-learning); background: color-mix(in srgb, var(--st-learning) 12%, transparent); }
.pill.st-young { color: var(--good); background: color-mix(in srgb, var(--st-young) 18%, transparent); }
.pill.st-mature { color: var(--good); background: color-mix(in srgb, var(--st-mature) 18%, transparent); }
.empty { text-align: center; color: var(--muted); padding: 30px !important; }

/* ---------- settings ---------- */
dialog {
  border: 0; border-radius: 28px; padding: 0;
  background: var(--surface); color: var(--text); box-shadow: 0 20px 60px rgba(0,0,0,.25);
  width: min(460px, calc(100vw - 32px));
}
dialog::backdrop { background: rgba(20, 20, 30, .35); backdrop-filter: blur(2px); }
.settings-form { padding: 22px 24px; display: flex; flex-direction: column; gap: 14px; }
.settings-form h2 { margin: 0 0 4px; font-size: 20px; }
.setting { display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; }
.setting input[type="number"] {
  width: 80px; font: inherit; color: inherit; background: var(--surface-2);
  border: 0; border-radius: 12px; padding: 7px 10px;
}
.setting input[type="checkbox"] { flex: none; width: 20px; height: 20px; accent-color: var(--primary); }
.settings-group { border-top: 1px solid var(--border); padding-top: 14px; }
.settings-group .hint { margin: 0 0 10px; }

/* sync */
.sync-indicator { position: relative; }
.sync-dot {
  position: absolute; right: 5px; bottom: 6px; width: 8px; height: 8px; border-radius: 50%;
  background: var(--top-good); border: 2px solid var(--top);
}
.sync-indicator[data-state="syncing"] .sync-dot { background: var(--top-busy); animation: pulse 1s ease-in-out infinite; }
.sync-indicator[data-state="pending"] .sync-dot { background: var(--on-top-muted); }
.sync-indicator[data-state="offline"] .sync-dot { background: var(--st-new); }
.sync-indicator[data-state="error"] .sync-dot { background: var(--accent); }
@keyframes pulse { 50% { opacity: .3; } }
.sync-status { margin: 0 0 10px; font-size: 14px; font-weight: 600; }
.sync-status[data-state="ok"] { color: var(--good); }
.sync-status[data-state="error"] { color: var(--again); }
.sync-status[data-state="offline"] { color: var(--hard); }
.sync-status[data-state="pending"] { color: var(--muted); }
.sync-status:empty { display: none; }
.sync-row { display: flex; gap: 8px; }
.sync-row input {
  flex: 1; min-width: 0; font: inherit; color: inherit; background: var(--surface-2);
  border: 0; border-radius: 22px; padding: 0 16px;
}
.settings-group a:not(.btn) { color: var(--accent-text); }
a.btn { text-decoration: none; color: inherit; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 10px);
  background: var(--primary); color: var(--on-primary); padding: 10px 18px; border-radius: 22px;
  font-size: 14px; font-weight: 700; opacity: 0; transition: opacity .2s, transform .2s; z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- small screens ---------- */
@media (max-width: 560px) {
  /* iOS zooms into inputs with text smaller than 16px when they get focus */
  input, select, textarea, .setting input[type="number"] { font-size: 16px !important; }
  .topbar { padding: max(12px, env(safe-area-inset-top)) 16px 12px; }
  .brand-text { display: none; }
  .panel { padding: 16px; }
  .count span { font-size: 32px; }
  .face { padding: 20px; }
  .rate-buttons { gap: 6px; }
  .rate kbd, .btn kbd { display: none; }
  .progress-row { grid-template-columns: 1fr; }
  .progress-label { grid-row: auto; flex-direction: row; gap: 8px; align-items: baseline; }
  .segmented button { padding: 0 12px; font-size: 14px; }
  .btn-lg { padding: 0 20px; font-size: 16px; }
  #btn-study::before { width: 34px; height: 34px; }
  #btn-practice { padding: 0 14px; font-size: 14px; }
  .words:not(.kanji) th:nth-child(3), .words:not(.kanji) td:nth-child(3) { display: none; }
}